AS Series Current Transformer

AS Series Current Transformer Crompton provides an extensive range of high

quality current transformers offering comprehensive

measuring and protection class accuracies. The range

provides accurate measurement of high primary currents

and ratio matching to a consistent � or � Amp secondary

current, proportional to the main current. To suit the

requirements of every application, the range offers encap-

sulated, current transformers and integral transducers in a

wide range of system current ratings, busbar sizes, case

widths and apertures, with various mounting options.

System voltage : 720V maximum

Test voltage : 3kV for 1 minute

System frequency : 50/60Hz

Short circuit thermal current (Ith) : 60 x rated primary current for 1 second

Overload withstand : 1.2 x rated primary current

Dynamic current (Idyn) : 2.5 x Ith

Operating temperature : -20 to 50C

Accuracy : 0.5%, 3% at ratio30/5A

Thermal Class : Class B (130 degree C) for winding core

Encapsulated in self – extinguishing plastic : V0

Mounting hardware :Plug-in metal feet for wall or base mounting

Busbar and DIN-rail mounting

Enclosure : Flame retardant

Compliant with : IEC/EN 60044-1

Specifications

AS Series Current TransformerSpecifications & Dimensions

ModelRated Current (A)

Primary/Secondary

Busbar Hole

DimensionsRated Burden Accuracy Class Rated Voltage Rated Frequency

AS1A 30/5A ~ 60/5A 31.5x11mm 2.5,3 0.5,3 720V 50/60Hz

AS1B 100/5A ~ 300/5A 31.5x11mm 3.75,5 0.5 720V 50/60Hz

AS2 400/5A ~ 500/5A 41.5x11mm 5 0.5 720V 50/60Hz

AS3 600/5A ~ 800/5A 61x21mm 10 0.5 720V 50/60Hz

AS5 1000/5A ~ 1600/5A 101x22mm 10 0.5 720V 50/60Hz

AS6 2000/5A ~ 3000/5A 130.5x11mm 15 0.5 720V 50/60Hz

Model A B C D E F G H I J K L M

AS1A 52 98.5 87 31.5 26 21.5 - 11 11 - 21.5 26 31.5

AS1B 45 98.5 74.5 31.5 26 21.5 - 11 11 - 21.5 26 31.5

AS2 45 98.5 74.5 41.5 31.5 26.5 21 11 11 21 26.5 31.5 41.5

AS3 45 126 101 61 52 25 - 21 21 - 25 52 61

AS5 45 163.5 144 101 81 45 - 22 22 - 45 81 101

AS6 45 222.5 192 130.5 126 58 - 11 11 - 58 126 130.5

AS Series Current Transformer

Model number Ratio (A) Class Burden (VA)

AS1A-30/5A 30/5A 3 3

AS1A-50/5A 50/5A 0.5 2.5

AS1A-60/5A 60/5A 0.5 2.5

AS1B-100/5A 100/5A 0.5 3.75

AS1B-150/5A 150/5A 0.5 3.75

AS1B-200/5A 200/5A 0.5 3.75

AS1B-250/5A 250/5A 0.5 5

AS1B-300/5A 300/5A 0.5 5

AS2-400/5A 400/5A 0.5 5

AS2-500/5A 500/5A 0.5 5

AS3-600/5A 600/5A 0.5 10

AS3-800/5A 800/5A 0.5 10

AS5-1000/5A 1000/5A 0.5 10

AS5-1200/5A 1200/5A 0.5 10

AS5-1500/5A 1500/5A 0.5 10

AS5-1600/5A 1600/5A 0.5 10

AS6-2000/5A 2000/5A 0.5 15

AS6-2500/5A 2500/5A 0.5 15

AS6-3000/5A 3000/5A 0.5 15